WIAS Preprint No. 1750, (2012)

Optimal control of an Allen--Cahn equation with singular potentials and dynamic boundary condition



Authors

  • Colli, Pierluigi
  • Sprekels, Jürgen

2010 Mathematics Subject Classification

  • 74M15 49K15 49K20

Keywords

  • optimal control, parabolic problems, dynamic boundary conditions, optimality conditions

Abstract

In this paper, we investigate optimal control problems for Allen--Cahn equations with singular nonlinearities and a dynamic boundary condition involving singular nonlinearities and the Laplace--Beltrami operator. The approach covers both the cases of distributed controls and of boundary controls. The cost functional is of standard tracking type, and box constraints for the controls are prescribed. Parabolic problems with nonlinear dynamic boundary conditions involving the Laplace--Beltrami operation have recently drawn increasing attention due to their importance in applications, while their optimal control was apparently never studied before. In this paper, we first extend known well-posedness and regularity results for the state equation and then show the existence of optimal controls and that the control-to-state mapping is twice continuously Fréchet differentiable between appropriate function spaces. Based on these results, we establish the first-order necessary optimality conditions in terms of a variational inequality and the adjoint state equation, and we prove second-order sufficient optimality conditions.

Appeared in

  • SIAM J. Control Optim., 53 (2015) pp. 213--234.

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